Summerville, SC Tap Water Quality

The drinking water in Summerville, SC generally meets all federal health standards, earning a solid B grade with a composite safety score of 84/100 across 4 ZIP codes. While the primary water utility, Summerville Cpw (sc1810003), maintains adequate compliance with EPA regulations, there have been minor or administrative violations on record. Overall, residents receive safe tap water that is actively monitored by South Carolina Department of Health and Environmental Control.

The accumulation of 16 health-based violations over the past 5 years highlights systemic challenges within Summerville's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by South Carolina Department of Health and Environmental Control. The city relies on surface water, which may require significant treatment upgrades to address these recurring issues.

Fortunately, the modeled risk for widespread lead exposure in Summerville's municipal water is relatively low compared to national averages. However, because lead typically enters drinking water through the corrosion of older, individual home plumbing rather than the main supply lines, residents in homes built before 1986 should still exercise caution by running the tap before use.